From nobody Wed May 14 22:22:05 2025 Delivered-To: importer2@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1699516297; cv=none; d=zohomail.com; s=zohoarc; b=h1gyURXrrljcfcbim6b5xrDVN/NTj4K2E59/usAHA3b9jPyQ11D7SAb2pF6EZ1zbsnyCIzzMJDpHglAk/3RBOkYQ+sbZenjlM+VTcXg2gv4EpqACKFZ6ZFOvXHR/OGHhI3zI5FhU6psko8EAULBFzuIJw4eIeyfnmCiR/n9huPc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1699516297; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=6+UZHZJ1Q2Im2o7lbO3HcKBgQCJEJIZRh1FfTzgs0Ac=; b=QsHVpa5VKo1tbvenG69uwUO4dEB//a0SI5fHQy/GCop2rogyV7031hbmyiDuqBT8RWXpZZGwFZi4+EKcQproBPsRr9aADKkt34zwf3FPOsegX0Ibra9mHkD4DCPcxo/eCBL0ADVWlNZu6M9BeOtWSHx5GDxruh5Gsx0ffuf/lYY= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 169951629797395.46848364461243; Wed, 8 Nov 2023 23:51:37 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r0zoK-0007Ju-UW; Thu, 09 Nov 2023 02:50:44 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r0zoJ-0007JF-0j for qemu-devel@nongnu.org; Thu, 09 Nov 2023 02:50:43 -0500 Received: from mgamail.intel.com ([192.55.52.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r0zoF-0001pD-Qj for qemu-devel@nongnu.org; Thu, 09 Nov 2023 02:50:42 -0500 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Nov 2023 23:50:22 -0800 Received: from unknown (HELO fred..) ([172.25.112.68]) by orsmga002.jf.intel.com with ESMTP; 08 Nov 2023 23:50:22 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1699516239; x=1731052239; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=cErrvaQ2Y2YRcZJb/xIJHbANMmxb80XwPPZKGztP7x4=; b=WOdD3i0FlOmHQMOkLfGMBj3WDOwBJs7u9Y+XbF6TaDBiVFG6U3k7hX2d DIMKptqY1pz0a3cuk/EjplKoBYxapk/bSAA9k12FzTL6SgQKHy2qZtjwQ fhmevxP3xX2598d+UQX3eRFPnoV3QHERQB8anub/z+SawArrCCucat793 Wu51jLmGz7sXzBylriqGvS7Sh5SbL5c7KEas8oq+cXwiBUF9tWh8lmJka D9GFlMfEMtxOU/6eiwIYhTicqfEhaeZ3soiXhCNo3yt5GEEyZBwk3/8q2 xnHQ4Wd3qvpoGASJAMEdAZOLI0bxgW6WWJIIWyjSHyR2Nl9mNospXcxgZ w==; X-IronPort-AV: E=McAfee;i="6600,9927,10888"; a="476165137" X-IronPort-AV: E=Sophos;i="6.03,288,1694761200"; d="scan'208";a="476165137" X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10888"; a="763329273" X-IronPort-AV: E=Sophos;i="6.03,288,1694761200"; d="scan'208";a="763329273" From: Xin Li To: qemu-devel@nongnu.org Cc: kvm@vger.kernel.org, richard.henderson@linaro.org, pbonzini@redhat.com, eduardo@habkost.net, seanjc@google.com, chao.gao@intel.com, hpa@zytor.com, xiaoyao.li@intel.com, weijiang.yang@intel.com Subject: [PATCH v3 2/6] target/i386: mark CR4.FRED not reserved Date: Wed, 8 Nov 2023 23:20:08 -0800 Message-ID: <20231109072012.8078-3-xin3.li@intel.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231109072012.8078-1-xin3.li@intel.com> References: <20231109072012.8078-1-xin3.li@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=192.55.52.43; envelope-from=xin3.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1699516299350100003 Content-Type: text/plain; charset="utf-8" The CR4.FRED bit, i.e., CR4[32], is no longer a reserved bit when FRED is exposed to guests, otherwise it is still a reserved bit. Tested-by: Shan Kang Signed-off-by: Xin Li Reviewed-by: Zhao Liu --- target/i386/cpu.h | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 5faf00551d..e210957cba 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -262,6 +262,12 @@ typedef enum X86Seg { #define CR4_PKE_MASK (1U << 22) #define CR4_PKS_MASK (1U << 24) =20 +#ifdef TARGET_X86_64 +#define CR4_FRED_MASK (1ULL << 32) +#else +#define CR4_FRED_MASK 0 +#endif + #define CR4_RESERVED_MASK \ (~(target_ulong)(CR4_VME_MASK | CR4_PVI_MASK | CR4_TSD_MASK \ | CR4_DE_MASK | CR4_PSE_MASK | CR4_PAE_MASK \ @@ -269,7 +275,8 @@ typedef enum X86Seg { | CR4_OSFXSR_MASK | CR4_OSXMMEXCPT_MASK | CR4_UMIP_MASK \ | CR4_LA57_MASK \ | CR4_FSGSBASE_MASK | CR4_PCIDE_MASK | CR4_OSXSAVE_MASK \ - | CR4_SMEP_MASK | CR4_SMAP_MASK | CR4_PKE_MASK | CR4_PKS_M= ASK)) + | CR4_SMEP_MASK | CR4_SMAP_MASK | CR4_PKE_MASK | CR4_PKS_M= ASK \ + | CR4_FRED_MASK)) =20 #define DR6_BD (1 << 13) #define DR6_BS (1 << 14) @@ -2520,6 +2527,9 @@ static inline uint64_t cr4_reserved_bits(CPUX86State = *env) if (!(env->features[FEAT_7_0_ECX] & CPUID_7_0_ECX_PKS)) { reserved_bits |=3D CR4_PKS_MASK; } + if (!(env->features[FEAT_7_1_EAX] & CPUID_7_1_EAX_FRED)) { + reserved_bits |=3D CR4_FRED_MASK; + } return reserved_bits; } =20 --=20 2.42.0